Steam cooking-range.



No. 878.449. PATBNTEDTEB. 4, 1908. J. B. BARRETT. STEAM COOKING RANGE. i

APPLICATION FILED APR.18.1907.

x i K i 'l fa/f 4 umrEn srATEs PATENT -oEEroE JEssE BRADLEY BARRETT, or'NIAGARA FALLS, NEW YORK.

STEAMv COOKING-RANGE.-

To all 'whom it may concern:

Be it known that I, J EssE BRADLEY BAR- RETT, a citizen of the UnitedStates, residing at Niagara Falls, in the county of Niagara and State ofNew York, have invented a new and useful Steam Cooking-Range, of whichthe following is a specification.

This invention relates to steam cooking ranges.

The object of the invention is in -a novel and practical manner toemploy low pressure superheated steam as a heating medium for a cookingrange and to utilize the steam in such manner that practically all ofthe heat units will be conserved for doing effective work.

Furthermore, to provide a simple, novel and eflicient form of rangeemploying radiated heat from superheated steam as a cooking medium, thatshall be adapted for baking, roasting or frying meats or other foodstuffs and for cooking griddle and pan cakes, or for any other use towhich an ordinary coal or gas range is put.

With the above and other objects in view as will appear as the nature ofthe invention is better understood, the same consists in the novelconstruction and combination of parts of a steam cooking range, as willbe hereinafter fully described and claimed.

In the accompanying drawings forming a part of this specification and inwhich like characters of reference indicate corres onding parts, Figure1 is a view'in vertical ongitudinal section.v Fig. 2 is a top plan viewpartly ill-section, of the range. Fig. 3 is a vertical transversesection through the oven. Fig. 4 is a diagrammatic view exhibiting themanner in which the range is heated.

The range com rises, as usual, side walls 1 and 2, a back wa 3, a bottom4, a top 5 anda a front 6 with which is combined two doors 7 and 8 thatmay be solid or provided with dampers 9, as usual with constructions ofthis character.

In order to conserve the heat, the back, bottom and side walls arecomposed of three parts,-these consisting of an inner plate 10, of castor sheet iron, an outer plate 11 of the same material, and an interposedlining 12 of asbestos or any other suitable insulating material. Y

Arranged within the body or shell of the stove is a shelf or support 13that is sup- Orted by ledges 13a either secured to or ormedintegral withthe side walls. This Specification of Letters Patent.

Application filed April 18. 1907. Serial No. 368936.

Patented Feb. ,4, 1908.

shell is preferably made of cast iron, is hollow, and is providedinteriorly with a series of baffles 14, which, as shown in Fig. 2, arearranged in staggered order, in order to present a series of tortuousducts 5 through which steam will be forced to pass before escaping,thereby to retard its rogress and thus insure the conservation of a l ofthe heat units.

The top 5 of the range is constructed in the same manner as the shelf orsupport, and therefore the `same reference characters will apply to bothparts.

Steam is supplied to the supportvand top through pipes 15 and 16arranged at one side of the parts, the steam being exhausted from the oposite side of the parts through pipes 17 an 18.

As stated, it is the object of the present invention to utilize lowpressure superheated steam, 'the object for employing low lpressuresteam being that it is desired that the circulation through the supportand top shall be relatively slow, thus to avoid noise, and also toinsure proper utilization of the heat. The superheating of the steam maybe effectedy in any preferred manner, one manner of securing this resultbeing shown in Fig. 4 in which a boiler 19 is provided, from which thesteam passes through a pipe 2O to a superheater 21 and thence through apipe 22 to the range, connecting with the supply pipes 15 and 16. Theexhaust pipes 17 and 18 leading from the range are connected to a returnpipe 23 leading to a steam trap or pump 24 from which the condensedsteam is forced back through. a pipe 29 to the boiler 19. If desiredother heating devices may take steam from the return pipe 23 and, afterusing its heat, return it to the steam trap 24, as for instance asecondary cooking apparatus or water heater 26, fed by a pipe 25 andhaving an exhaust pipe 27, or a steam radiator 28 receiving steam fromthe pipe 23 and returning it to the same pipe near the steam trap orpump.

Instead of taking steam from a boiler 19 it may be taken from an exhaustpipe or a steam supply pipe, and that the condensed steam may bedelivered into a sewer or other drain instead of returning it to theboiler.

The top of the range is flat and may be finished to present a griddleupon which pan cakes or the like may be cooked, so that an extendedsurface is provided for this pur- 2 878,44@ I y r 'pose which will beevenly heated throughout and will therefore possess advantages over theordinary form of'gas stove in which the heat is divided up into aplurality of zones due to the arrangement ofthe burners. By theprovision of the tortuous ducts formed by the baiies 14 thesteam will beretained a suificient time to impart all its effective heat to the topand shelf, but will not be held back long enough to allow condensationwhich would be objectionable, but even if this should occur the water ofcondensation will be forced out through the pipe 18 by the steamentering the pipe 16.

From the foregoing description it will be seen that while theimprovements herein defined are simple in character, they will bethoroughly effective for the purposes designed, and that the ideasydefined may be carried out in an easy and practical manner.

Whatis claimed is y 1. A range having heat insulated back, sides andbottom7 and a rectangular frame front, a top plate, and an interiorshelf dividing the range into two ovens, the upper one heated at the topand bottom and the lower one heated only at the top, said top plate andshelf each being a h'ollow closed struc* ture having parallel bafflesextending partly across the structure and attached at one end only, andalternately to opposite sides to form a tortuous passage from end to endof each structure, and steam supply and eX- haust pipes, connectedrespectively to opposite ends of each tortuous passage.

2. A range having a top, and a horizontal shelf dividing the oven intotwo parts said top plate and shelf, each being a hollow.

